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Questions tagged [precipitation]

Precipitation is a common climatic variable used in many GIS modeling processes

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GPM annual precipitation using Google Earth Engine

I'm trying to calculate GPM v6 annual precipitation using the Google Earth Engine, but show this error: Line 11: ee.ImageCollection(...).select(...).filterDate(...).filterBounds(...).clip is not a ...
0 votes
1 answer
183 views

Use data from 'UCSB-CHG/CHIRPS/DAILY' to calculate total precipitation

The total amount of precipitation for the same days using data from 'UCSB-CHG/CHIRPS/DAILY' gave almost identical amounts of precipitation for a large country and for a city in the country. How can I ...
2 votes
2 answers
2k views

Standardized Precipitation Index with gamma function

Inspired from Climate Engine platform, I want to calculate Standardize Precipitation Index based on this paper, where each rainfall datasets are fitted to the gamma function to define the relationship ...
1 vote
1 answer
640 views

Units of ERA5 Daily Aggregates Google Earth Engine

In Google Earth Engine, ERA5 Daily Aggregates - Latest Climate Reanalysis Produced by ECMWF / Copernicus Climate Change Service Bands show the maximum total_precipitation value of 0.02m which is 20mm. ...
1 vote
1 answer
355 views

GPM monthly data is inconsistent with the half hourly data aggregated to monthly

I wrote a code in GEE to first aggregate half-hourly GPM data into cumulative daily precipitation and then aggregate daily data into cumulative monthly data. In the next step, to ensure that my code ...
1 vote
0 answers
42 views

Receiving "inf" error when running QGIS Zonal Statistics

I have been analyzing precipitation data from the NOAA (see here - https://water.noaa.gov/resources/downloads/precip/stageIV/) where I use QGIS to calculate the mean/median/min/max precipitation for ...
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0 answers
83 views

Why NOAA layers appear to be incorrect

I had previously built a Leaflet map that pulled past precipitation data (24, 48, and 72 hours) from the NOAA nowCOAST site, however, the site was decommissioned. I used a previous StackExchange post ...
-2 votes
1 answer
79 views

SMAP time series analysis error in code

Input are: NASA/SMAP/SPL4SMGP/007 NASA/GPM_L3/IMERG_MONTHLY_V06 When I try to compute the time series I get the following error: ImageCollection (Error) reduce.mean: Error in map(ID=20200601_0130): ...
1 vote
1 answer
114 views

Earth Engine GFS: Calculating Hourly Precipitation

Any tutorial on the GFS model in Earth Engine describes filtering out the 6-hour precipitation intervals, to avoid double-counting the cumulative precipitation band. However, I cannot square the ...
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0 answers
32 views

Scale parameter value to extract precipitation data using CHIRPS in GEE

I'm trying to find the precipitation data over 270 polygons using the UCSB-CHG/CHIRPS/PENTAD collection. When I set the scale anywhere between 10m-1000m, I can see for all polygons there is data ...
1 vote
0 answers
26 views

How to use Lagrange interpolation method for station lies between a grid?

I have rainfall data for a catchment from 1990-2020 in grid format. But my station of interests lies in the grid, how to apply the interpolation to that station. I'm not sure if I'm proceeding ...
0 votes
2 answers
236 views

Taking average of long term daily rainfall values if it contains lots of zero values

I wanted to interpolate my daily rainfall data into ArcGIS for visual representation. I have almost 10 years of daily rainfall data which contains lots of zeros. When I take the average daily for ...
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1 answer
136 views

Raster values in R lacking decimals

I am trying to get raster values from several layers from CHELSA climatic data. Here you can download one of them [https://os.zhdk.cloud.switch.ch/envicloud/chelsa/chelsa_V2/GLOBAL/climatologies/1981-...
2 votes
0 answers
51 views

How to clip precipitation layer to a shapefile in QGIS?

I downloaded a 4000m resolution precipitation dataset from ClimateEngine. I tried clipping by mask layer and the clipped raster doesn’t fill out the shapefile leaving major gaps. What can be done so ...
0 votes
1 answer
93 views

What are the mesh and raster layers in QGIS that are included when a GRIB2 file is imported?

I am currently working with grib2 files from the RDPA dataset in QGIS. When one of these grib2 files is imported, there is a raster layer and a mesh layer that is generated. I am struggling to ...
0 votes
1 answer
127 views

CHIRPS GEF Download with R

I need to download CHIRPS-GEF (rainfall forecast) raster data in R. I have tried with url <- "https://data.chc.ucsb.edu/products/CHIRPS-GEFS_precip_v12/daily_16day/2023/10/17/*.tif" ...
2 votes
1 answer
1k views

Daily IMERG timeseries in Google Earth Engine

I am trying to make an area-averaged time series of daily precipitation (IMERG). I'd use NASA Giovanni, but I need to be able to use my own shapefiles to average the areas. Given the size of the area ...
1 vote
1 answer
260 views

Exporting monthly PRISM time-series precipitation data for US counties using Google Earth Engine

I'm trying to extract a monthly precipitation value from the PRISM climate dataset for each month of 2018 through 2021 (48 months total) for each US county in my shapefile (952 counties total) in ...
0 votes
1 answer
100 views

Chart of 14-day cumulative rainfall

I need to chart/download a list of 14-day summed precipitation values, and I was not able to get this script to run. I seem to be running into an error related to the 'system:time_start' property. I'm ...
3 votes
1 answer
768 views

Contours into polygons with QGIS

I'm using QGIS 3.26 to create a precipitation map for Los Angeles. I started with Final 85th Percentile, 24-hr Rainfall contours from here: https://dpw.lacounty.gov/wrd/hydrologygis/ I brought the ...
1 vote
1 answer
138 views

Calculating spring precipitation totals from monthly PRISM time series using Google Earth Engine

I'm working with monthly precipitation data from PRISM Climate Group for the time period Oct. 1991 to Sept. 2021. The monthly images are currently in an imageCollection and I'm trying to calculate the ...
0 votes
0 answers
58 views

3D rainfall rendering

The following link shows how to render rainfall in a 3D scene using JavaScript in ArcGIS API. I don't have any experience using ArcGIS API thus, is it possible to render precipitation and cloud cover ...
1 vote
1 answer
497 views

Bilinear resampling yields inaccurate/small values (Earth Engine)

I am trying to upscale / resample some GSMaP observations from 0.1 x 0.1 degrees to 30m. I want the resolution to match Landsat 8 so that I can perform some modeling. But in Google Earth Engine when ...
1 vote
1 answer
699 views

Calculate daily precipitation data from hourly GSMaP over several years

I am still new to the Google Earth Engine and try to calculate the daily precipitation based on the hourly GSMaP data over a longer period of time. I know, that there are already a couple of questions ...
0 votes
1 answer
81 views

How to aggregate total amount of precipitation from all cells within three seperate catchments?

Using ArcGIS Pro, I ran 4 different IDW interpolations (rasters) of rainfall measurements across 26 measurement stations (point features). I'm trying to now aggregate the total amount of precipitation ...
0 votes
1 answer
64 views

Identifying the certain values and counting the event of maximum precipitation with it's date and pointID with Python

I have a CSV file of my study area and I want to choose best area in this large study area to run my modelling for hydrogeology which is based on maximum event precipitation. I have the code and I can ...
0 votes
1 answer
161 views

How to Map.addLayer() rainfall featureCollection over globe using Google Earth Engine?

I am trying to print the precipitation imageCollection allover the whole world but I allways get only a part of the image. as you see in the image, the north of europe is empty and event when I use ...
1 vote
1 answer
302 views

Precipitation data error in Google Earth Engine code

I want to get the precipitation totals for certain months, but when I run it on the WorldClim Climatology V1 dataset, I get the following error message. how can i fix this? Error message: ...
1 vote
0 answers
337 views

Extract precipitation values for polygons over PRISM dataset using Google Earth Engine

I am trying to extract monthly PRISM ppt values over 58 polygons for 1 year. I am able to extract the values for one month (image), but when I try to map over the entire image collection, the result ...
4 votes
1 answer
2k views

Google Earth Engine: precipitation data, summing monthly data is not matching annual sum

In essence, I used GRIDMET to pull both monthly and annual precip over the same area, same time, and same database, but summing each month for the same water year is not matching: NEW NOTE: As ...
1 vote
0 answers
1k views

Getting the monthly aggregate precipitation values from ERA5-Land Monthly Averaged - ECMWF Climate Reanalysis

I have a problem with the ERA 5 - Dataset. What I need are the monthly aggregated values for the precipitation in my region. In the "ERA5 Monthly Aggregates - Latest Climate Reanalysis Produced ...
-1 votes
3 answers
213 views

Daily temperature data portal globally

Can anyone help me with a common website from where I can download historical climatic data on a daily basis? PRISM gives only for US regions.
1 vote
0 answers
541 views

ERA5-Land Hourly Precipitation Chart and Map

I am little bit confused how to handle the "ERA5-Land Hourly"-Dataset in GEE. I want the total precipitation of every month from 2018 till end of 2021 for my area. For the chart I took the ...
1 vote
1 answer
138 views

Accessing historical precipitation data outside of GEE

I'm looking for historical and also present climate data for some polygons I have. I would like to be able to access rainfall data for these points. I cannot use GEE and was struggling to find a good ...
0 votes
0 answers
166 views

NetCDF file is rotated QGIS

I downloded IMERG precipitation data as NetCDF files but when I use QGIS to open them, the raster files are rotated. Does anyone know how to solve this?
3 votes
0 answers
91 views

Reprojecting of raster using QGIS

The raster I am trying to reproject is found here https://psl.noaa.gov/data/gridded/data.gpcp.html, and it's the first one "Monthly Mean" (so you might try to do it yourselves). Problem is ...
0 votes
2 answers
4k views

WGS84 projection is invalid for aggregations

I am trying to extract the pixel value from the last image of an image collection. The problem is that when I do so, I get an error stating the following: This is my code for extracting the pixel ...
2 votes
2 answers
357 views

Resolution Setup for Precipitation Interpolation in QGIS

I am trying to interpolate rainfall data using the GDAL's Grid (Inverse Distance to a power) in QGIS 3.16. Is there a way to specify the resolution of the result/change the size of pixel? The ...
0 votes
1 answer
2k views

Daily Rainfall data extraction from CHIRPS database for polygons using Google Earth Engine

I don't use GEE a lot but I have to use it to extract daily rainfall data from the CHIRPS database. It should be simple but I am stuck. The outcome should be one CSV file with three columns: polygon ...
0 votes
1 answer
572 views

GEE Converting Units of the FLDAS Precipitation data (Rainf_f_tavg) from kg m-2 s-1 to mm/month

Using Google Earth Engine to extract FLDAS dataset for specific coordinates for the time period 1990-2020. I use Rainf_f_tavg Precipitation bands with the default format is kg m-2 s-1. Then i multiply ...
0 votes
1 answer
353 views

Moisture Stress Index - how important is seasonal influence in a deciduous forest?

I want to calculate moisture stress index for a deciduous forest using the formula from the article 'Detecting vegetation leaf water content using reflectance in the optical domain' (Ceccato et al. ...
2 votes
2 answers
2k views

Iterating over dates to extract precipitation in Google Earth Engine

I'm looking to sum precipitation for a period of 10-days prior to a specified date. This is just an example - in fact, I have around 60 different dates and I don't want to select each the date ...
0 votes
1 answer
1k views

Exporting rain data to CSV file from Google Earth Engine

I would like to get the CSV file of rain daily data from GSMAP for a specified polygon (mean in geometry). I succeed in getting into it on a chart, but now I want to download the data and I'm having ...
0 votes
0 answers
725 views

Downloading JAXA/GPM_L3/GSMaP/v6/reanalysis" hourly product in Google Earth Engine

I want to download "JAXA/GPM_L3/GSMaP/v6/reanalysis" hourly product for a relatively large area approximately 300000 square km and for a long period of time, say 15 years, since this product ...
1 vote
2 answers
574 views

Dictionary.get: Dictionary does not contain key: precipitation

I am trying to get 3 hourly rainfall data for my region using TRMM/3B42. There seems to be an error but I am unable to find it. var rain = ee.ImageCollection("TRMM/3B42").select("...
1 vote
1 answer
1k views

Extract time-series rainfall from multiple point with date information

I would like to have a CSV file which contain a time-series of 30 minutes rainfall from last 10-days before Landslide occurs from certain (landslide) location. I used NASA GPM IMERG data for the ...
1 vote
1 answer
2k views

Export raster from Google Earth Engine

I wish to download the raster image of precipitation data. Is that possible? I think I'm doing something wrong when I export it. Here is my code: //Rain var lluvia = ee.ImageCollection('JAXA/GPM_L3/...
-1 votes
1 answer
240 views

Daily rainfall chart in a polygon between dates in GEE

I would like to make a chart of daily rainfall in a polygon of a shape file collection. var inidate = ee.Date.fromYMD(2020,5,1) var enddate = ee.Date.fromYMD(2020,11,10) // Difference between start ...
0 votes
1 answer
179 views

Cumulative Rainfall with GPM between dates

I am trying to generate a cumulative rainfall map between two dates using the GSMaP satellite. I don't know how to do the simple sum of the information in that band "hourlyPrecipRate". ...
1 vote
1 answer
113 views

Selecting only CFSR images in Google Earth Engine with precipitation data

I am trying to create cumulative monthly composites of precipitation from CFSR data in Google Earth Engine (i.e. each image would be mm/month for each month) However, I realised that images ending ...